超导转变温度Tc和低温电阻是表征材料低温特性的两个重要指标,对于线材或带状样品,一般应用四探针电阻法来测量.本方法山于原理简单,可使用较简便的仪器设备及测量条件,故得到广泛的应用. 过去采用的电位差计的测量方式,由于受到操作条件及设备的限制,一直限于手工测量.此种方 The superconducting transition temperature Tc and low temperature resistance are two important indicators of low temperature characteristics of the material, for wire or ribbon samples, the general application of four-probe resistance method to measure the method Shan in the principle is simple, the use of relatively simple equipment And measurement conditions, it has been widely used. The past use of the potentiometer measurement methods, due to operating conditions and equipment constraints, has been limited to manual measurement.